Borislaw Rybakov alias Slawa (László Szögyényi) has been living in Hungary for eight years. He has his own sports club and works as a bartender at a nightclub. He is about to take the Hungarian citizenship exam. One evening, a police detective Imre Bagosi (János Tóth) visits him at his workplace. It turns out that the detective knows everything about Slawa. He knows his underworld past, he knows that he was imprisoned and also that he is the owner of a rare, very valuable stamp. The detective makes him a business offer. Slawa doesn't trust the detective, so he rejects him first, but since he has a lot of debt, he finally decides to take the opportunity. The detective tells Slawa that in 1932 Alexej Rybakov, or Slawa's grandfather, stole the stamp from an exhibition in Moscow. After he died, the stamp went to Slawa's father, and most likely to him after his death. Slawa doesn't believe the detective, so she investigates things. In the end, it turns out that he was telling the truth and the stamp is also found. All that's left is to strike the deal, which takes place at a junkyard on the outskirts of town. The only problem is that no one knows who to trust.